🇮🇳 Chennai vs 🇪🇸 Madrid

Chennai's tropical wet-and-dry climate is defined by its long Bay of Bengal coastline, which delivers the northeast monsoon from October to December — the city's primary rainy season, unusual for an Indian metro. The flat coastal plain offers little topographic relief, so microclimates are driven primarily by proximity to the sea, river corridors along the Adyar and Cooum, and dramatic variation in building density and green cover. Summer temperatures routinely exceed 40°C inland while coastal neighborhoods benefit from steady onshore sea breezes that moderate heat by 3–5°C.

Hot semi-arid — very hot dry summers, cold winters, minimal rainfall

Madrid sits on the Castilian plateau at 2,100 feet (640m), giving it more extreme temperatures than coastal Spanish cities. Summers are scorching and dry (one of Europe's hottest capitals); winters are cold and crisp. Spring and fall are ideal.